CN106148646B - A kind of S136 martensitic stain less steels of excellent anti-corrosion performance - Google Patents
A kind of S136 martensitic stain less steels of excellent anti-corrosion performance Download PDFInfo
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- CN106148646B CN106148646B CN201510129196.9A CN201510129196A CN106148646B CN 106148646 B CN106148646 B CN 106148646B CN 201510129196 A CN201510129196 A CN 201510129196A CN 106148646 B CN106148646 B CN 106148646B
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 35
- 229910000734 martensite Inorganic materials 0.000 title claims abstract description 31
- 238000005260 corrosion Methods 0.000 title claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000010791 quenching Methods 0.000 claims abstract description 13
- 230000000171 quenching effect Effects 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 150000003839 salts Chemical class 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 238000010792 warming Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 238000002791 soaking Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 229920003023 plastic Polymers 0.000 description 22
- 239000004033 plastic Substances 0.000 description 22
- 239000000243 solution Substances 0.000 description 12
- 230000007797 corrosion Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 239000011651 chromium Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910001566 austenite Inorganic materials 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229940075397 calomel Drugs 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical class [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000329 molecular dynamics simulation Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Abstract
The present invention relates to a kind of S136 martensitic stain less steels of excellent anti-corrosion performance, it is prepared by following process step：First, the S136 martensitic stain less steels are subjected to solution treatment in electrothermal furnace, the actual conditions of the solution treatment is, 250 DEG C of preheatings are warming up to 300 360 DEG C/h heating rate, 1,110 1130 DEG C for the treatment of temperature is heated to 100 150 DEG C/h heating rate again, the 2h of processing time 1.5, and high-purity Ar gas is passed through when handling, Ar pressure is 60 80MPa；Then, Quenching Treatment is carried out to S136 martensitic stain less steels, is specifically, with 0.8 1.0 DEG C/s cooling velocity, the S136 martensitic stain less steels to be cooled to less than 220 DEG C rapidly；Then, reallocation processing is carried out to S136 martensitic stain less steels, is specifically that the rapid salt bath processing environment that S136 martensitic stain less steels after quenching are inserted into 330 350 DEG C is heated to be incubated 3 5h, is then air-cooled to room temperature；Finally, temper is carried out to S136 martensitic stain less steels, is specifically to be heated to that 300 330 DEG C of 2 3h of insulation carry out temper and water cooling is to room temperature with 150 200 DEG C/h heating rates.
Description
Technical field
The present invention relates to the technical field of plastic die steel, particularly a kind of plastic die steel and its Technology for Heating Processing, especially
It is the S136 martensitic stain less steels and its Technology for Heating Processing of a kind of excellent anti-corrosion performance.
Background technology
The polymer plastic materials such as polyvinyl chloride, fire retardant ABS can decomposite the harmful elements such as Cl in forming process, right
Mold cavity has stronger corrosivity, causes spot corrosion, stress corrosion etc. to be failed, and then reduces die life and finished surface
Quality.
From micro-scale using methods such as molecular dynamics, first principles, iron carbon clusters have been calculated in Cr elements
Addition under can reduce the absorption to chlorion, namely the carbide of common two kinds of configurations of M23C6, M3C is difficult to adsorb chlorine
Ion, but M23C6 carbide can cause its surrounding matrix " chromium depleted ", so as to cause spot corrosion；And M3C carbide then will not be right
" chromium depleted " is influenced too much.
Thus, how to cause the carbide in the tissue of plastic die steel to try one's best and exist with M3C form, and avoid
A large amount of appearance of M23C6 carbide, have great importance for the decay resistance for improving plastic die steel.
The content of the invention
It is an object of the invention to provide a kind of plastic die steel, the decay resistance to improve plastic die steel.
Heretofore described plastic die steel is S136 martensitic stain less steels, and it have passed through forging, hot rolling and nodularization and moves back
After fire, following Technology for Heating Processing is passed through again：
First, the plastic die steel is subjected to solution treatment in electrothermal furnace, the actual conditions of the solution treatment is,
250 DEG C of preheatings are warming up to 300-360 DEG C/h heating rate, then processing temperature is heated to 100-150 DEG C/h heating rate
1100-1130 DEG C of degree, processing time 1.5-2h, and high-purity Ar gas is passed through when handling, Ar pressure is 60-80MPa；
Then, Quenching Treatment is carried out to the plastic die steel, specifically with 0.8-1.0 DEG C/s cooling velocity, rapidly
The plastic die steel is cooled to less than 220 DEG C；
Then, reallocation processing is carried out to the plastic die steel, is specifically rapidly to put the plastic die steel after quenching
The salt bath processing environment for entering 330-350 DEG C is heated to be incubated 3-5h, is then air-cooled to room temperature；
Finally, temper is carried out to plastic die steel, is specifically that 300- is heated to 150-200 DEG C/h heating rates
330 DEG C of insulation 2-3h carry out temper and water cooling is to room temperature.
S136 plastic die steels after being handled through the application Technology for Heating Processing, can be fine with excellent structure property
Ground is controlled to M23C6 carbide so that the basic form with M3C of carbide in plastic die steel is present, so that
S136 martensitic stain less steels have excellent mechanical property and decay resistance concurrently.
Brief description of the drawings
Fig. 1 is diffracting spectrum of the S136 martensitic stain less steels after different solid solution temperatures；
Fig. 2 is EIS figure of the S136 martensitic stain less steels after different solid solution temperatures, wherein Fig. 2（a）It is Bode figures,
Fig. 2（b）It is Nyquist figures；
Fig. 3 is dynamic potential polarization curve of the S136 martensitic stain less steels after different reallocation treatment temperatures.
Embodiment
Embodiment 1.
First, the plastic die steel is subjected to solution treatment in electrothermal furnace, the actual conditions of the solution treatment is,
250 DEG C of preheatings are warming up to 330 DEG C/h heating rate, then 1100 DEG C for the treatment of temperature is heated to 120 DEG C/h heating rate,
Processing time 1.5h, and high-purity Ar gas is passed through when handling, Ar pressure is 60MPa；
Then, Quenching Treatment is carried out to the plastic die steel, is specifically with 1.0 DEG C/s cooling velocity, rapidly by institute
State plastic die steel and be cooled to 210 DEG C；
Then, reallocation processing is carried out to the S136 martensitic stain less steels, is specifically rapidly by the S136 horses after quenching
The salt bath processing environment that family name's body stainless steel inserts 330 DEG C is heated to be incubated 3h, is then air-cooled to room temperature；
Finally, temper is carried out to S136 martensitic stain less steels, is specifically to be heated to 320 with 180 DEG C/h heating rates
DEG C insulation 2h carries out temper and water cooling is to room temperature.
Embodiment 2-3 and comparative example 1-4 specific processing parameter is referring to table 1（Unlisted expression and the phase of embodiment 1
Together）：
EIS fitting results under the conditions of the different solution treatment of table 1
| No. | Treatment temperature（℃） | Processing time（h） | Processing pressure（MPa） | Re/Ω∙cm2 | Rct/kΩ·cm2 |
| 1 | 1100 | 1.5 | 60 | 3.556 | 308.55 |
| 2 | 1120 | 1.8 | 70 | 3.737 | 312.60 |
| 3 | 1130 | 2 | 80 | 3.533 | 299.50 |
| 1* | 980 | 1.8 | 70 | 2.983 | 171.60 |
| 2* | 1030 | 1.8 | 70 | 2.984 | 195.25 |
| 3* | 1080 | 1.8 | 70 | 3.775 | 229.48 |
| 4* | It is untreated | - | - | 3.258 | 128.51 |
Corrosion resistance test uses electrochemical method, and using Corrtest CS350 type electrochemical workstations, research material exists
Containing Cl-Electrochemical corrosion performance in the aqueous solution.Electrochemistry experiment uses three-electrode system, using Pt electrodes as to electrode, calomel
Electrode is reference electrode, and stainless steel curved beam is working electrode.Tested media selects the 3.5%NaCl aqueous solution, and working electrode is processed into
For 10 × 3 mm disk sample, and approved sample is carried out using epoxy resin.0.5h cathodic polarizations are carried out in test process first
To remove because the stainless steel surfaces that standing time difference is caused are passivated the different influence of membrane stage.0.5h open circuit electricity is carried out afterwards
Position measurement, to obtain the corrosion potential of stainless steel in media as well（OCP）, and using this current potential as zero point, carrying out alternating-current magnitude is
10mV, frequency range 10-2Hz ~ 105Hz AC impedance（EIS）Spectrometry, to obtain passivating film of the material under corrosion potential
Characteristic；Afterwards, with 0.166 mV/s sweep speed, in -0.5V（vs. OCP）~1V（vs. OCP）In the range of carry out electrokinetic potential
Polarization test, and terminate measurement when being set in current density higher than 0.1 μ A/cm2, now corresponding potential value is material
Pitting potential.
By Fig. 1 it can be found that S136 martensitic stain less steels after heat treatment have the appearance of martensite peak position.Wherein through 1130
DEG C solution treatment and after quenching, occurs in that obvious austenite peak, and after 980 DEG C and 1030 DEG C of solution treatment and quenching, then goes out
The peak position of obvious rich Cr types M23C6 carbide is showed.
It is not difficult to find out by table 1 and Fig. 2, embodiment 1-3 has due to having carried out suitable solution treatment, decay resistance
Excellent decay resistance, although and comparative example 1-3 also implement the present invention Technology for Heating Processing, due to its solution treatment temperature
Spend and improper, although it has improvement by a relatively large margin relative to undressed comparative example 4 in decay resistance, but
It is difficult to reach satisfied effect.Meanwhile, applicant also found that the temperature of solution treatment is further improved, for improving S136 geneva
The decay resistance of body stainless steel, which be there will be no, to be obviously improved, and a certain degree of decline can be caused on the contrary.It is therefore preferable that at solid solution
The temperature of reason is 1100-1130 DEG C, processing time 1.5-2h, and high-purity Ar gas is passed through when handling, and Ar pressure is 60-
80MPa。
Embodiment 4.
First, the S136 martensitic stain less steels are subjected to solution treatment in electrothermal furnace, the solution treatment it is specific
Condition is to be warming up to 250 DEG C of preheatings with 360 DEG C/h heating rate, then be heated to treatment temperature with 150 DEG C/h heating rate
1130 DEG C, processing time 2h, and high-purity Ar gas is passed through when handling, Ar pressure is 80MPa；
Then, Quenching Treatment is carried out to S136 martensitic stain less steels, is specifically, with 1.0 DEG C/s cooling velocity, rapidly will
The S136 martensitic stain less steels are cooled to less than 220 DEG C；
Then, reallocation processing is carried out to the plastic die steel, is specifically rapidly to put the plastic die steel after quenching
The salt bath processing environment for entering 330 DEG C is heated to be incubated 3h, is then air-cooled to room temperature；
Finally, temper is carried out to plastic die steel, is specifically that 320 DEG C of insulations are heated to 180 DEG C/h heating rates
2h carries out temper and water cooling is to room temperature.
Embodiment 5 and comparative example 4-7 specific processing parameter are referring to table 1（Unlisted expression is same as Example 4）：
EIS fitting result fitting results under the different reallocation treatment conditions of table 2
| No. | Treatment temperature（℃） | Processing time（h） | Pitting potential（mV） | Paralympic content（vol.%） |
| 4 | 330 | 3 | 395.62 | |
| 5 | 350 | 5 | 391.99 | |
| 4* | 300 | 4 | 140.33 | |
| 5* | 400 | 4 | 160.24 | |
| 6* | 450 | 4 | 195.84 | |
| 7* | 500 | 4 | 58.72 |
The austenite content result in table 2 is it can be found that S136 martensitic stain less steels after heat treatment have austenite to go out
It is existing.Wherein reached at 450 °C greatly, but decay resistance now decreases on the contrary.
It is not difficult to find out by table 2 and Fig. 3, embodiment 4-5 has due to having carried out suitable reallocation processing, decay resistance
Have excellent decay resistance, although and comparative example 4-7 also implement the present invention Technology for Heating Processing, at its reallocation
Manage temperature and improper, its decay resistance is all worse than undressed quenching state.
Embodiment described above only expresses embodiments of the present invention, and it describes more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention
Enclose.
Claims (4)
1. the S136 martensitic stain less steels of a kind of excellent anti-corrosion performance, it is characterised in that pass through following Technology for Heating Processing step：
First, S136 martensitic stain less steels are subjected to solution treatment in electrothermal furnace, the actual conditions of the solution treatment is, with
300-360 DEG C/h heating rate is warming up to 250 DEG C of preheatings, then is heated to treatment temperature with 100-150 DEG C/h heating rate
1100-1130 DEG C, processing time 1.5-2h, and high-purity Ar gas is passed through when handling, Ar pressure is 60-80MPa；
Then, Quenching Treatment is carried out to S136 martensitic stain less steels, is specifically, with 0.8-1.0 DEG C/s cooling velocity, rapidly will
It is cooled to less than 220 DEG C；
Then, reallocation processing is carried out to S136 martensitic stain less steels, is specifically rapid that S136 martensites after quenching is stainless
The salt bath processing environment that steel inserts 340-350 DEG C is heated to be incubated 4-5h, is then air-cooled to room temperature；
Finally, temper is carried out to S136 martensitic stain less steels, is specifically that 300- is heated to 150-200 DEG C/h heating rates
330 DEG C of insulation 2-3h carry out temper and water cooling is to room temperature.
2. S136 martensitic stain less steels according to claim 1, it is characterised in that：The treatment temperature of the solution treatment is
1120 DEG C, processing time is 1.8h.
3. S136 martensitic stain less steels according to claim 1, it is characterised in that：The pressure of the solution treatment is
70MPa。
4. S136 martensitic stain less steels according to claim 1, it is characterised in that：The salt temperature of the reallocation processing
For 340 DEG C, soaking time is 4h.
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| CN107513602A (en) * | 2017-10-24 | 2017-12-26 | 中国航发哈尔滨轴承有限公司 | A kind of same temperature hardening heat treatment method of raising 8Cr4Mo4V steel toughness |
| CN107723422A (en) * | 2017-11-28 | 2018-02-23 | 湖北工程职业学院 | A kind of heat treatment quenching process of middle carbon martensite acid-resistant stainless steel |
| CN113355494B (en) * | 2021-05-14 | 2022-11-04 | 西安文理学院 | Method for improving corrosion resistance of martensitic stainless steel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664153A (en) * | 2005-03-17 | 2005-09-07 | 上海材料研究所 | Anticorrosion and antiwear martensitic stainless steel and its production method and use |
| CN1876881A (en) * | 2005-06-02 | 2006-12-13 | 大同特殊钢株式会社 | Steel for a plastic molding die |
| EP1739199B1 (en) * | 2005-06-30 | 2009-06-24 | OUTOKUMPU, Oyj | Martensitic stainless steel |
| CN102173028A (en) * | 2010-12-29 | 2011-09-07 | 深圳市昌红模具科技股份有限公司 | Manufacturing method of biological cell strainer used in medical laboratory |
| CN104561479A (en) * | 2015-01-22 | 2015-04-29 | 机械科学研究总院先进制造技术研究中心 | Heat treatment process of S316 martensitic stainless steel |
-
2015
- 2015-03-24 CN CN201510129196.9A patent/CN106148646B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664153A (en) * | 2005-03-17 | 2005-09-07 | 上海材料研究所 | Anticorrosion and antiwear martensitic stainless steel and its production method and use |
| CN1876881A (en) * | 2005-06-02 | 2006-12-13 | 大同特殊钢株式会社 | Steel for a plastic molding die |
| EP1739199B1 (en) * | 2005-06-30 | 2009-06-24 | OUTOKUMPU, Oyj | Martensitic stainless steel |
| CN102173028A (en) * | 2010-12-29 | 2011-09-07 | 深圳市昌红模具科技股份有限公司 | Manufacturing method of biological cell strainer used in medical laboratory |
| CN104561479A (en) * | 2015-01-22 | 2015-04-29 | 机械科学研究总院先进制造技术研究中心 | Heat treatment process of S316 martensitic stainless steel |
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Denomination of invention: S136 martensitic stainless steel with excellent corrosion resistance Effective date of registration: 20220628 Granted publication date: 20171107 Pledgee: Bank of China Zhengzhou branch of Limited by Share Ltd. culture Pledgor: China Machinery New Material Research Institute (Zhengzhou) Co.,Ltd. Registration number: Y2022980009271 |
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Denomination of invention: S136 martensitic stainless steel with excellent corrosion resistance Effective date of registration: 20230807 Granted publication date: 20171107 Pledgee: Bank of China Zhengzhou branch of Limited by Share Ltd. culture Pledgor: China Machinery New Material Research Institute (Zhengzhou) Co.,Ltd. Registration number: Y2023980050871 |